Apparatus for dyeing loose textile goods.



w. BERGER. APPARATUS FOR DYEING LOOSE TEXTILE GOODS.

APPLICATION FILED FEB. 7, 1912 Patented Aug. 26, 1913.

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W. BERGER.

I I APPARATUS-FOR DYEING LOOSE TEXTILE GOODS.

APPLICATION FILED FEBJ, 1912.

Patented Aug. 26, 1913.

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a e a a m w UNITED4 srarnsragnnr omen WALDEMAR BERGER, 0F 'H6GHST Q HE-MA RM NEAS IGNORTQ VORM. mnrs'rnn LUcIus & BRT'TNING; or noonsr-on-rnu-mam, GERMANY, a con- PORA'I'ION or GERMANY.

APPARATUS Fen-Drums LOQSE ruxrmn oons.

Specification of Letters Eatent.

PatentedAug.26,1913.

Application filed February 7, 1912. Serial No. 6%,881.

- To all whom it may concern:

were unattainable owing to the fact that the material would not; suiliciently absorb thedyestuif in passing through the dye-bath.

The uneven and incomplete dyeing was due in the first place to the uneven penetration of the -dye-liquor into the material. and" secondly to the fact that the loose textile goods carry along air which very unfavorably affects the dyeing process, especially when vat-dyestuffs are used.

Now, my present invention relates to an apparatus, by which it is possible to dye loose textile goods in an excellent manner as a continuous operation. This is attained by liberating from the loose textile goods the air entangled in them by subjecting them to pressure when they enter the dyebath; and by then'alternately pressing the textile material while it is in the dye-liquor and allowing it to become loose so that it is again saturated with the liquor. In this manner the fibers are so thoroughly imbued with the liquor that a uniform and complete dyeing is obtained.

Considerable difiiculties were encountered in putting this invention into practice, he-

. cend and conse uently to accumulate at the cause the loose material while immersed in the dye-bath has a great tendency to asupper guide rol ers when the usual vertical travel is used, whereby a regular and smooth possible.

passage through the machine becomes im- According to the invention this drawback is obviated by causing the mate rial, which should be placed as loosely as possible, to move in a horizontal direction,

However, even this arrangement gave rise.

to difliculties, owing to the natural tendency of the fibers to ascend, in consequence whereof they accumulate at the guide rollers which reverse the direction of travel. These difliculties can be removed by bringing the conveying bands together (which in order to allow the material to swell are separated a certain distance from each other) at the said rollers, so that they hold the material 'firmly over the rollers' The present invention is illustrated in the accompanying drawings, in whichand convey it uniformly Figure 1 is a vertical longitudinal section of the dye-vat, showing the conveyor bands and the fibers between them, the guide-and squeezing-rolls being shown in end elevaition; Fig. 2 is an enlarged detail of a guidesen; conveyor bands carried by superposed :chains, and an interposed block containing small spacing-rollers, on the line IIII of Fig. 4; Fig. 3 is a sectional detail of a {pair of squeezing-rolls, the conveyer bands,- and two spacing blocks and rollers, on line III-4H of Fig. 5; Fig. 4 .is a detail view of the parts shown in Fig, 2, viewed at right angles thereto, the wall of the dye-vat in which the guide-roll is journaled' being shown in vertical section, and the block As shown in the drawings, the maria" enters the vat in an integral layer, and is not disintegrated or torn apart during-its travel through the vat. On entering the dye-liquor it is squeezed between rolls 6 for the purpose of expressing-the air from it.

The continuous conveying bands as a are made up of slats b and carry the material between them. These bands travel on small rollers 0 (Figs. 2, 3 and 4) so placed that as the bands approach the guide rolls Z they come close together, and having lpassedthe rolls 0?, part company again. 0 and d are attached to the sides (f) of the trough. In order to avoid trouble caused he rollers by the fibers clogging the bearings oi rollers I c, the latter are mounted in ca'vitiesc" in blocks 9 suitably attached tc-th'e sides (fl of the trough, and the rolls d are suitably journaled in casings f which are secured with a liquid-tight joint to the walls f of the dye-vat.

As shown in Fig. 1, in order that the material may not carry more liquor from the vat than is necessary, it is passed finally between squeezing rolls h as it leaves the liquor, but in order to felt the fibers and to effect a preliminary squeezing and also aid in separating loose fibers from conveyer band a, before it enters between these rolls it is pressed while still'on the lower band by rolls i the construction of the latter of which is similar to that of the squeezing roll m presently to be described; the material is thus formed into a felt-like mass which readily leaves the band as the latter turns around the roll 7c, whereas it has heretofore been found very difficult to remove the material from the band when it has not been squeezed by such rolls i i. The slats Z) are attached to brackets Z), the latter serving as supports for the pintles of the conveyer-chains Z and l and are spaced apart sufficiently to allow access of liquor to the material; they must be strong enough to withstand the pressure of the several squeezing rolls. The fact that the slats are spaced apart requires some special arrangement for insuring the application "ofuniform pressure of the squeezing rolls, as otherwise the dyed material may have a striped appearance. y

In Figs. 1, 3 and 5, the squeezing rolls m m are provided with teeth which engage in the spaces between the slats and are of the same depth as the slats. The latter are preferably of trapezoidal" cross section and the teeth are of corresponding section. Another mode of efiectlng uniform pressure consists in applying the squeezing rolls at 'a curve in the. conveying band and so mounting the slats on the chains that as they pass around this curve the slats come substantially in contact with each other, as illustrated in Fig. 8. The slats are mounted on the chains so that the said chains are all in the same plane, with the result that at alternate guide rolls d the chains are on the inside of the curve, as shown in Figs. 6 and 7, while at the other guide rolls'the chains are on the outside of the curve as shown in Fig, 8'.

In the latter case the slats come substantially in contact with each other as they pass the curve and form approximately continuous surfaces, against which toothless pressure rolls m may be applied. Having now particularly described my invention, I declare that what I claim is.' 1 1. The herein-described apparatus for dyeing loose material in a continuous operation by alternately squeezing the material and allowing it to become loose in the dye-bath, comprising conveying bands consisting of slats suitably sp aced'aparhbetween which bands the material is carried in the dye-bath; guide rolls whereby during the horizontal travel of the bands the latter are so far separated from each other that the material is loose, while at the guide rolls which reverse the direction of travel the bands approach each other and hold the material tightly; and squeezing rolls at one or more points of the conveying bands which press the latter together, substantially as described. i l 2. In-an apparatus for dyeing. loose textile materials, squeezing rolls having teeth corresponding in cross section with the cross sectionof the spaces betweenthe slats, so

that the teeth engage in these spaces and the material is uniformly pressed, substantially as described.

3. An apparatus for dyeing loose materials, comprising a vat, means forconveying an integral layer of the material through the vat, and means'for repeatedly compressing and decreasing the pressure on said layer as it travel's'through the vat.

4. In an apparatus for dyeing loose mat erials, a vat, means for conveying an in-' tegral layer of the material through the vat, comprising two: adjacent traveling bands each consisting of a pair of chains and slats attached thereto, and means for repeatedlyt decreasing .andincreasing the distance between the bands; v

5. In an apparatus for dyeing loose textile materials, traveling conveying bands, comprising two pairs of chains with slats attached to each pair of said chains, separating blocks for increasing the distance be tween the bands, said blocks having pointed ends, cavities in said blocks, and rollers in said cavities.

6. In an apparatus for dyeing loose textile materials, traveling conveying bands comprising pairs of chains with slats at- 'tached to each pair of said chains, separating blocks" for increasing .thedistance between the bands, said blocks having pointed ends, and-compressing means between the ends of-adj'ace'nt blocks.

7 In an apparatus for dyeing loose textile materials, traveling conveying bands comprising pairs of chains, and trapezoidalshaped spacedslats attached to said pairs of chains, the wider faces of the slats on one band confronting the wider faces of the and compress saidmaterials while in said I dye-vat. r

8. In .an a paratus for dyeing loose textile materia s, traveling conveying bands comprising pairs of chains, trapezoidalshaped "spaced slats attached by their narrower faces to said pairs of chains, and cooperating toothed wheels adapted to fit m the spaces between saidslats and form a substantially uniform surface with the wider faces of the slats.

9. An apparatus for dyeing loose'textile materials, comprising-a dye-vat, confronting traveling conveying bands within said dye-vat, said confronting bands consisting of spaced slats mounted upon chains the pintles of which are in the same plane, and

rolls mounted in said dye-vat and serving to support said conveying bands so that as the bands bend around successive rolls the spaces between the slats are alternately opened and closed, thereby forming. alternately discontinuous and continuous conveying surfaces.

10, In an apparatus for dyeing loose textile materials, traveling convleying bands comprising two pairs of chains, spaced slats attached to said chains,,said-slats forming a surface for conveying the textile materials, a toothed roll below one of the bands and having its teeth arranged to mesh in the spaces between the slats, and a roll above the band, said rolls adapted to compress and separate said textile materials from the slats.

11. In an apparatus for dyeing loose textile materials,. traveling conveying bands comprising twopairs of chains, spaced slats attached to each pair of said chains, blocks having sloping pointed ends between the bands for radually separating said bands, and toothed compressing rolls on the outer sides of the conveying bands, having their teeth arranged to mesh in the spaces between the slats and to decrease the distance between the bands at a ,point between the ends of adjacent separating blocks.

12. In an apparatus for dyeing loose textile materials, adjacent traveling conveying bands comprising two pairs of chains and slats attached thereto, portions of said bands being superposed, means to supply materials to be dyed between the bands, and

means toalternately loosen and compress the material to be dyed while between the means to remove the remaining dye-liquor $0 from said material.

In testimony whereof, I'aflix my signature in presence of two witnesses.

WALDEMAR BERGER.

Witnesses:

JEAN GRUND,

CARL GRUND.' 

